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mm: madvise allow remove operation for hugetlbfs 

Now that we have hole punching support for hugetlbfs, we can also
support the MADV_REMOVE interface to it.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Kravetz 2015-09-08 15:01:57 -07:00 committed by Linus Torvalds
parent 70c3547e36
commit 72079ba0df
1 changed files with 1 additions and 1 deletions
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mm/madvise.c
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@ -301,7 +301,7 @@ static long madvise_remove(struct vm_area_struct *vma,
*prev = NULL; /* tell sys_madvise we drop mmap_sem */ *prev = NULL; /* tell sys_madvise we drop mmap_sem */
if (vma->vm_flags & (VM_LOCKED | VM_HUGETLB)) if (vma->vm_flags & VM_LOCKED)
return -EINVAL; return -EINVAL;
f = vma->vm_file; f = vma->vm_file;